From: Christoph Hellwig <hch@lst.de>
To: Qu Wenruo <quwenruo.btrfs@gmx.com>
Cc: Christoph Hellwig <hch@lst.de>, Chris Mason <clm@fb.com>,
Josef Bacik <josef@toxicpanda.com>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org
Subject: Re: [PATCH 05/20] btrfs: simplify extent buffer reading
Date: Fri, 10 Mar 2023 09:03:31 +0100 [thread overview]
Message-ID: <20230310080331.GA15272@lst.de> (raw)
In-Reply-To: <17c86afa-41af-a8d4-094e-81f1d47e8788@gmx.com>
On Fri, Mar 10, 2023 at 04:02:02PM +0800, Qu Wenruo wrote:
> Like this inside a RAID0 bg:
>
> 0 32K 64K 96K 128K
> | |//|//| |
>
> There is an old chunk allocator behavior that we can have a chunk starts at
> some physical bytenr which is only 4K aligned, but not yet STRIPE_LEN
> aligned.
>
> In that case, extent allocator can give us some range which crosses stripe
> boundary.
Ewww, ok. So the metadata isn't required to be naturally aligned.
next prev parent reply other threads:[~2023-03-10 8:03 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-09 9:05 simplify extent_buffer reading and writing Christoph Hellwig
2023-03-09 9:05 ` [PATCH 01/20] btrfs: mark extent_buffer_under_io static Christoph Hellwig
2023-03-09 11:06 ` Johannes Thumshirn
2023-03-10 7:26 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 02/20] btrfs: move setting the buffer uptodate out of validate_extent_buffer Christoph Hellwig
2023-03-09 11:10 ` Johannes Thumshirn
2023-03-10 7:27 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 03/20] btrfs: merge verify_parent_transid and btrfs_buffer_uptodate Christoph Hellwig
2023-03-09 11:17 ` Johannes Thumshirn
2023-03-09 15:21 ` Christoph Hellwig
2023-03-10 7:28 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 04/20] btrfs: always read the entire extent_buffer Christoph Hellwig
2023-03-09 11:29 ` Johannes Thumshirn
2023-03-09 15:21 ` Christoph Hellwig
2023-03-14 6:09 ` Christoph Hellwig
2023-03-17 23:16 ` David Sterba
2023-03-20 5:46 ` Christoph Hellwig
2023-03-10 7:35 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 05/20] btrfs: simplify extent buffer reading Christoph Hellwig
2023-03-09 11:59 ` Johannes Thumshirn
2023-03-10 7:42 ` Qu Wenruo
2023-03-10 7:47 ` Christoph Hellwig
2023-03-10 8:02 ` Qu Wenruo
2023-03-10 8:03 ` Christoph Hellwig [this message]
2023-03-10 8:07 ` Qu Wenruo
2023-03-10 8:15 ` Christoph Hellwig
2023-03-10 9:14 ` Qu Wenruo
2023-03-10 10:54 ` Filipe Manana
2023-03-10 11:12 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 06/20] btrfs: remove the mirror_num argument to btrfs_submit_compressed_read Christoph Hellwig
2023-03-09 12:58 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 07/20] btrfs: simplify the read_extent_buffer end_io handler Christoph Hellwig
2023-03-09 13:08 ` Johannes Thumshirn
2023-03-10 8:14 ` Qu Wenruo
2023-03-10 8:17 ` Christoph Hellwig
2023-03-10 8:30 ` Qu Wenruo
2023-03-10 9:30 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 08/20] btrfs: do not try to unlock the extent for non-subpage metadata reads Christoph Hellwig
2023-03-09 13:13 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 09/20] btrfs: return bool from lock_extent_buffer_for_io Christoph Hellwig
2023-03-09 13:17 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 10/20] btrfs: submit a writeback bio per extent_buffer Christoph Hellwig
2023-03-09 13:35 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 11/20] btrfs: move page locking from lock_extent_buffer_for_io to write_one_eb Christoph Hellwig
2023-03-09 13:46 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 12/20] btrfs: simplify extent buffer writing Christoph Hellwig
2023-03-09 14:00 ` Johannes Thumshirn
2023-03-09 15:22 ` Christoph Hellwig
2023-03-10 8:34 ` Qu Wenruo
2023-03-10 8:41 ` Christoph Hellwig
2023-03-09 9:05 ` [PATCH 13/20] btrfs: simplify the extent_buffer write end_io handler Christoph Hellwig
2023-03-09 14:10 ` Johannes Thumshirn
2023-03-09 15:22 ` Christoph Hellwig
2023-03-10 8:44 ` Qu Wenruo
2023-03-10 11:47 ` Christoph Hellwig
2023-03-09 9:05 ` [PATCH 14/20] btrfs: simplify btree block checksumming Christoph Hellwig
2023-03-09 15:51 ` Johannes Thumshirn
2023-03-10 8:57 ` Qu Wenruo
2023-03-09 9:05 ` [PATCH 15/20] btrfs: remove the io_pages field in struct extent_buffer Christoph Hellwig
2023-03-09 16:01 ` Johannes Thumshirn
2023-03-10 8:53 ` Qu Wenruo
2023-03-10 11:50 ` Christoph Hellwig
2023-03-09 9:05 ` [PATCH 16/20] btrfs: stop using PageError for extent_buffers Christoph Hellwig
2023-03-09 16:05 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 17/20] btrfs: don't check for uptodate pages in read_extent_buffer_pages Christoph Hellwig
2023-03-09 16:10 ` Johannes Thumshirn
2023-03-10 9:08 ` Qu Wenruo
2023-03-10 11:54 ` Christoph Hellwig
2023-03-14 6:12 ` Christoph Hellwig
2023-03-09 9:05 ` [PATCH 18/20] btrfs: stop using lock_extent in btrfs_buffer_uptodate Christoph Hellwig
2023-03-09 9:05 ` [PATCH 19/20] btrfs: use per-buffer locking for extent_buffer reading Christoph Hellwig
2023-03-09 17:12 ` Johannes Thumshirn
2023-03-09 9:05 ` [PATCH 20/20] btrfs: merge write_one_subpage_eb into write_one_eb Christoph Hellwig
2023-03-09 17:28 ` Johannes Thumshirn
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